Character Interaction System

UNREAL ENGINE 5.6–5.8 PLUGIN · V2.0

Character Interaction System

Doors, levers, pickups and code locks, in single player and online. Blueprint first, with a C++ API.

• Multiplayer
• Blueprint-first
• UE 5.6–5.8

Quick start →Open the demoGET IT ON FAB

Where to start

Quick startMake a usable object from scratch, without code.→The demoOpen the demo map and try every object.→Upgrading from 1.xWhat changed in 2.0 and what to do in your project.→

What's in the box

Character interaction component

Goes on the character: finds the objects in reach, picks the one to use and runs the hold and the use.

UCISCharacterInteractionComponent

Interaction object component

Makes an actor usable: the sides it is used from, its state as a gameplay tag, and what each side does in each state.

UCISInteractionObjectComponent

Actions

What a use does, such as playing a montage or picking up an item. A finished Action can set the object's next state.

UCISInteractionObjectAction

Move handlers

Bring the character into place before or while the Action runs.

UCISInteractionObjectMoveHandler

Conditions

Decide whether a character may use an object. The server can check them again before it accepts a use.

UCISInteractionObjectCondition

Choosing the object

Tests that score the objects in reach, so the character uses the best one.

UCISDetermineUseObjectTest

Data objects

Link one character to one object it can use: the side it uses and Blueprint events at each stage of a use.

UCISInteractionDataObject

Widgets and icons

Show an object's icon on screen with the widget component and the plugin's widgets.

UCISWidgetComponent

Component references

Name a component of an actor, and a socket, in the Details panel; the plugin finds it at run time.

FCISSceneComponentsOnActor

Animation helpers

Attach a mesh to a socket for the length of an anim notify, and move a character with root motion.

UCISAnimNotifyStateAttachMesh

Multiplayer

Where Actions and MoveHandlers run, how the server checks a use, and the project's network settings.

ECISNetExecutionPolicy

Three steps to a usable object

1. Add UCISCharacterInteractionComponent to your character.

2. Add UCISInteractionObjectComponent to the actor to use. Give it a side with an Action for the object's state.

3. Call TryUseObject from your use input.

Get help

Ask questions and show what you build on the plugin's Discord server.

JOIN THE DISCORDGET IT ON FAB